[fiftyfifty]

Hopefully no one that handles beer kegs for a living is lifting full ones. They have special dollies for handling beer kegs, they even have special attachments for fork lifts for picking them up. I've never been to a brewery where anyone was picking up beer kegs by themselves.

[Teever]

You've also never been to a bar where the owner is too cheap to buy one of those dollies. Or rather you have, but you've just never been to the back of the bar where a porter is lifting those full gets up and down a rickety set of stairs.